Severe Duty Motors – SD100 IEEE841

General Description

Additionally to our standard die cast aluminum rotor, also available on frame size 140 to 250, the SD100 IEEE841 severe duty motors advanced electromagnetic design features a highly-engineered die cast copper rotor that helps these motors meet or exceed the stringent requirements of the Energy Independence & Security Act of 2007 (NEMA MG1– table 12-12).  All SD100 841 sever duty motor are equipped with drive end and opposite drive end inpro/seal® bearing isolators and are available with a variety of QuikMOD modifications and kits.

Performance Specification

HP Range

1 - 400

Frame Size



Cast iron


NEMA Premium ®

NEMA Premium ® + (FS 140-250)




Service Factor



Class F

Temperature Rise

Class B @ 1.0SF,

Class F @ 1.15SF

Conduit Box (Oversized)

Cast iron

Fan Cover

Cast iron

Cooling Fan

Bi-directional - polypropylene

Bronze (S440)

Counter Clockwise (300-400HP s/4 Poles)


Die Cast Aluminum

Die Cast Copper (FS 140-250)


0.06 IPS

Inverter Duty

VT 20:1

CT 4:1

CT 10:1

Frame and End Shields

Cast iron construction for exceptional structural integrity & corrosion resistance, equipped with integrally cast feet. Condensation T-drains are provided. Lifting eyebolts are included with motors > 75 lbs. Cast iron construction, polycarbonate fan, zinc-plated hardware, epoxy enamel paint and stainless steel nameplate resist rust and corrosion.


Die cast copper rotor or die cast aluminum that meets or exceeds NEMA MG1 Table 12-12 efficiencies.

Each rotor assembly is dynamically balanced for extended bearing life, and includes a high strength carbon steel (C1045) shaft for maximum rotor performance.


This insulation system meets or exceeds NEMA MG1-2010, Part 31, making all motors suitable for operation with adjustable frequency drives. All windings are tested for CIV.

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